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Newly Updated Circuit Projects:

Cree XLamp XM-L LED Datasheet

Last Updated on May 17, 2026 by Swagatam 12 Comments

CreeXlamp

The XLamp XM-LED can be considered as the highest performing, single die solid state LED module which is able to produce lights at ultra bright intensities. I have explained it’s datasheet, specifications. High Illumination Efficacy Due to it’s ultra bright and high efficiency values, the Xlamp becomes highly suitable for applications such as in automotive headlamps, stadium flood lights, […]

Filed Under: Datasheets and Components Tagged With: Cree, Datasheet, LED, XLamp, XM

Car Head Lamp Fader Circuit (Breathing Effect Generator)

Last Updated on May 16, 2026 by Swagatam 6 Comments

carheadlightmodifiedcircuit

The proposed circuit of a modified car head lamp fader, “breather” circuit generates a slow flashing effect over the head lamps every time the lamps are switched OFF. The “breathing effect” continues for a certain predetermined period after which the process automatically shuts off. The circuit was requested by Mr. Ray. Technical Specifications I just wanted to say that […]

Filed Under: Automobile Electronics Tagged With: Breathing, Effect, Fader, Generator, Head, Lamp

Timer Controlled Exhaust Fan Circuit

Last Updated on January 14, 2023 by Swagatam 36 Comments

timer controlled exhaust fan circuit

This simple timer oscillator circuit can be used for automatically switching an exhaust fan ON/OFF as per a fixed predetermined period. The circuit was requested by Mr. Anshuman. Technical Specifications Here is a  suggestion for the circuits on your blog. The idea is to have a very simple Oscillating circuit will delays of 5-10 minutes to […]

Filed Under: Timer and Delay Relay Tagged With: Controlled, Exhaust, Timer

Car Turn Signal Flasher Circuit with Lamp Malfunction Indicator

Last Updated on May 16, 2026 by Swagatam 24 Comments

carturnsignalindicatorcircuit

In this post I have explained an automotive/car turn signal indicator circuit idea with a built-in load malfunction indicator, meaning an additional LED lamp fitted on the dashboard which would warn if any of the side indicators went bad or fused. The idea was researched and requested by Mr. Abu-Hafss. The Circuit Concept I have found a transistor-based flasher including a […]

Filed Under: Automobile Electronics Tagged With: Flasher, Indicator, Lamp, Malfunction, Signal, Turn

Digital Voltmeter Circuit Using IC L7107

Last Updated on June 8, 2026 by Swagatam 75 Comments

digital panel voltmeter circuit

In this post I have explained a very simple digital panel type voltmeter circuit using a single IC L7107 and a few other ordinary components. The circuit is able to measure voltages right up to 2000 AC/DC V. About the IC L7107 Making this simple digital panel voltmeter circuit is particularly easy due to the availability […]

Filed Under: Meters and Testers Tagged With: Digital, L7107, Voltmeter

15V 10 Amp Voltage Regulator Circuit Using IC LM196

Last Updated on January 19, 2025 by Swagatam 22 Comments

lm196 pinout details

In the following post I have explained a linear voltage regulator power supply circuit using the IC LM196 which is capable of handling up to 10 amps of current and is able to provide a variable voltage right from 1.25V to 15V DC. About the IC LM196 or LM396 The IC LM 196 is single […]

Filed Under: Power Supply Circuits Tagged With: 15V, LM196, Regulator, Voltage

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